Mounting bracket



Sept 18, 1951 c. l. BROWN, JR 2,558,609

MOUNTING BRACKET Filed July 15, 195o 2 Sheets-Sheet l 2L-Q INVENTOR.CHQYRLES INNESS BROWNJR.

Sept. 18, 1951 c. 1. BROWN, JR 2,568,609

MOUNTING BRACKET Filed July 13, 1950 2 Sheets-Sheet 2 f4 JNVENTOR.CHARLES INNESS BRQWNLJR' BYMMw Patented Sept. 18, 1951 UNITED STATESPATENT OFFICE MOUNTING BRACKET Charles Inness Brown, Jr., Floral Park,N. Y.

Application July 13, 1950, Serial No. 173,591

Claims.

This invention relates to a mounting bracket and more particularly to abracket for mounting an object, such as a desk lamp, on a support, suchas on the edge of a desk or a table.

The bracket of the invention is peculiarly adapted to the mounting ofdesk lamps and the like on modern sheet metal desks the tops of whichterminate substantially flush with the sides, thereby eliminating orsubstantially eliminating an overhang or projection of the top beyondthe sides to which mounting brackets of conventional construction suchas a conventional C-clamp may be attached.

In the sheet metal desks as currently constructed, however, the sheetmetal top terminates in ya smoothly curved edge with the free end of themetal turned in' contiguous to the turned in edge of the sidewalls,forming thereby a recessed slot spaced from the top. The bracket of theinvention takes advantage of this desk construction as a means ofattachment thereto. To this end the bracket is made of substantiallyF-shaped configuration and comprises an upper arm adapted to engage theupper surface of the desk top, and a lower arm spaced therefrom adaptedto enter the slotted recess referred to, these two arms being integralwith a third arm substantially perpendicular thereto. In addition thelower arm is slotted for reception of screws adapted to engage one orboth contiguous surfaces of the slotted recess, thereby to secure thebracket to the desk. The vertical arm of the bracket also has preferablytapped to the lower end thereof, a pressure screw terminating adjacentthe desk in a pressure plate and pad integral therewith, the other endof the screw being provided with an adjusting knob.

Mounted upon and integral with the upper arm of the bracket is anupstanding socket member having a knurled friction nut tapped theretofor detachably mounting thereon the extension arm of a desk lamp or thelike.

The invention thus provides a bracket which is easy to install, which isreadily adapted to support objects having different mountingrequirements, and which is relatively rigid and easily removed. Y

yOther features, objects and advantages of the invention will beapparent from the following description read in connection with theaccompanying drawings in which:

Fig. 1 is a, perspective view of the bracket of my invention mounted onthe edge of a sheet metal desk and as used to support a lamp.

Fig. 2 is a cross section of the bracket taken along the line 2--2 shownin Fig. 1. Fig. 3 is a section taken along` the lineV 3-3 shown in Fig.2.

' Fig. 4 is an enlarged fragmentary cross section,

2 corresponding to that of Fig. 2, but showing the arrangement forforcing the bracket member into the slotted recess of the support andfor anchoring it in position on the support.

Figs. 5 and 6 are partial cross sections of the graclet as taken at 5-5and 6 6 respectively of Fig. 7 is a view in rear elevation of thepreierred embodiment of the invention employing a pressure screw forholding the upper portion of the bracket tightly against the support.

Fig. 8 is a View in side elevation and partly in section of thepreferred embodiment of the lFJracket, as taken along the line 8 8 shownin Referring to Fig. 1, there is shown a lamp cornprising a shade IIJsupported by an arm II. The arm II extends into and is detachablymounted in a socket I2 which is secured to and forms part of a bracketin accordance with the invention, indicated generally at I3. The socketI2 may be fastened to the bracket I3 in any well known manner as, forexample, by welding or riveting. For detachably securing the lamp arm IIin socket I2, the latter has tapped to the upper end thereof a knurledfriction nut I2a.

The bracket I3 is shown in the drawings mounted on a support, such as asheet metal desk, which comprises a top I6 and a base Il. The top I6 issupported on the base I7, but a slotted recess I8 which is normallyhidden from view is provided between these portions. The recess ispreferably formed by' spacing the portions slightly, as shown, but itmay be formed. in other ways and in another part of one or both of theportions.

The bracket I3 has, as indicated in FigsA l and 2, a generally F-shapedconfiguration viewed in side elevation and comprises an angle member I4welded or otherwise fastened to a channel member I5 welded to the anglemember within the angle thereof, and consisting of an upper arcuateportionIEa and a lower horizontally extending arm portion Ib. The armportion IEb ts snugly into the desk slot or recess I3 between the deskportions I6 and I'I. Screws I9 which also t into the recess I8 engagethe contiguous walls of the recess and force the arm portion I 5b of themember I5 into the recess.

As shown in Fig. 3', the member i5 preferably has a pair of slots 20formed in the arm portion [5b thereof which ts into the recess Iii.These slots which permit the threads of the screws I9 to engage thecontiguous surfaces of the recess I8 and also to guide the'screws intothe recess. Ushaped guides 22 are preferably provided integral with armportion |51) to assist in properly' aligning the screws I9 with' therecess' I8'. These guides may extend to the outer surface of arm portion|511, if desired, thus forming an aperture with cylindrical walls forguiding the screws I9.

Figs. 4, and 6 shows the relation of the screws I9 to arm portion |511in greater detail. The screws I9 which are preferably self-tapping,engage both contiguous surfaces of the recess I8 formed by the deskportions I6 and I'I. The recess is preferably of a depth sufficient topermit several threads of the screw to engage the walls. The heads ofthe screws I9 bear against the.,

outer surface of the channel member I5, thus forcing this member againstthe desk top por-V tion I6. Alternatively, the same result` maybeproduced by having the screws I9 extend through the angle member I4 withthe heads of the screws bearing against the outer surface of the memberI4.

If an upward force is exerted on arm II, the bracket will tend to pivotabout the arm portion |517 of the member I5 in the recess I8. Thisplaces an undesirable strain on this portion of the member, and maydeform the bracket causing it to lose contact with the top portion ofdesk I6 in its rest position, thereby causing the lamp to becomeunsteady. To relieve a part of this strain and to assist in maintainingthe member I5 pressed against the desk top portion I6, a resilient pad24, Figs. 2 and 4, may be provided between the lower portion of memberI4 and the portion I'I. The pad 24 which may be made of any resilientmaterial, such as rubber or felt, is slightly thicker in itsuncompressed state than the spacing between the angle member I4 and theportion IIV so that when the member I5 is forced by the screws againstthe desk top I6, the pad 24 presses outwardly against the member I4.This pressure against the member I4 causes the upper part of the memberI5 to press against the top of the desk I6.

In the preferred embodiment of the invention shown in Figs. 7 and 8, thepad 24 is replaced by a pressure screw 26 which is threaded through themember I4. The screw 26 is rotatably secured, as shown in Fig. 8, to apressure plate 21 which bears against a pad 28; and is provided at itsopposite end with an adjusting knob 29.

When the bracket shown in Figs. '7 and 8 is installed, the screw 26 isthreadably .withdrawn until the plate 21 is adjacent the member I4.After member I5 has been properly positioned, as shown, and the screwsI9 tightened, the screw 26 is turned until the pad 2B engages the baseI'I of the desk until the desired pressure is obtained on the lowerportion of member I4. The right angle portion of the member I4 betweenthe screws I9 and the socket I2 may be omitted, or the portion of themember I5 between the screws I9 and the desk top I6 may be omitted, butin the preferred embodiment, these portions are employed to provide amore rigid bracket which conforms to the associated support surface. Y

I claim:

1. A mounting bracket of substantially F-shaped configuration viewed inside elevation, comprising: an upper arm adapted to engage a surface ofa supporting structure, a lower arm adapted to enter a slotted recess ofsaid structure spaced from said surface, said upper and lower arms beingintegral with afthird arm substantially perpendicular thereto, saidlower arm being slotted for reception of screws adapted to enter andengage'at least one surface of said slotted recess and thereby securesaid bracket to said supporting structure.

2. A mounting bracket of substantially F-shaped conguration viewed inside elevation, comprising: an upper arm adapted to engage a surface ofa supporting structure, a lower arm adapted to enter a slotted recess ofsaid structure spaced from said surface, said upper and lower arms beingintegral with a third arm substantially perpendicular thereto, saidlower arm being Vslotted for reception of screws adapted to enter andengage at least one surface of said slotted recess andthereby securesaid bracket to said supporting structure, and pressure screw meanstapped to the portion of said third arm remote from said upper and lowerarms.

3. A mounting bracket of substantially F-shaped configuration viewed inside elevation, comprising; an upperV arm adapted to engage a surface ofa supporting structure, a ,lower arm adapted to entera slotted recess ofsaid structurespaced from said surface, said upper and lower arms beingintegral with a third arm substantially perpendicular thereto, saidlower arm being Vslotted, for reception of screws adapted to enter'andengage'at leastY one surface of said slotted recessand thereby securesaid bracket to said supporting structure, Yand means integral with-saidupper arm for detachably mounting an object thereon. v y

4..A mounting bracket "comprising an angle member and a channel member,said channel member being positioned within the angle of said anglemember and securedthereto to form a bracket of substantially F-shapedconfiguration viewed in side elevation, forming thereby 'an upperarniadapted to engage a surface of a supporting structure, and a lower armadapted to enter a slotted recess of said structure spaced from saidsurface, Ythe lower arm of said channel member being slotted forreception of screws adapted to enter andvengage at least one surface ofsaid slotted recess and thereby secure said braket to said supportingstructure.

5. A mounting bracket comprising an angle member'and a channel member,said channel memberbeing positioned' within the angleof said anglemember and secured thereto to form a bracket of substantially-F-shapedconfiguration viewed in side.elevation,"forming thereby an upper armadapted to engage a surface of'a supportv ing structure, Yand a lowerarm .adapted to enter a slotted recess of said structure spaced fromsaid surface, the lower arm of said channel lmember being slotted forreception of screws adapted to enter and Yengage at least one surface ofsaid slottedl recess and, thereby secure said bracket to said supportingstructure, means integral with' one arm of said angle member forYdetachably mounting an object thereon, and pressure screw means tappedtothe remaining arm of said angle member at. a point removed from saidupper 'and lower arms.` y

CHARLES INNESS BROWN, JR.

- REFERENCES CITED 4The following referencesrare of record in the leofthis patent:

UNITED STATES PATENTS

